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<?php
 
class Smtp{
 
/* Public Variables */
 
var $smtp_port;
 
var $time_out;
 
var $host_name;
 
var $log_file;
 
var $relay_host;
 
var $debug;
 
var $auth;
 
var $user;
 
var $pass;
 
/* Private Variables */
var $sock;
 
/* Constractor */
 
function smtp($relay_host = "", $smtp_port = 25, $auth = false, $user, $pass) {
$this->debug = false;
 
$this->smtp_port = $smtp_port;
 
$this->relay_host = $relay_host;
 
$this->time_out = 30; //is used in fsockopen()
 
$this->auth = $auth; //auth
 
$this->user = $user;
 
$this->pass = $pass;
 
$this->host_name = "localhost"; //is used in HELO command
$this->log_file = "";
 
$this->sock = false;
}
 
/* Main Function */
 
function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "") {
$mail_from = $this->get_address($this->strip_comment($from));
 
$body = ereg_replace("(^|(rn))(.)", "1.3", $body);
 
$header .= "MIME-Version:1.0rn";
 
if ($mailtype == "HTML") {
$header .= "Content-Type:text/htmlrn";
}
 
$header .= "To: " . $to . "rn";
 
if ($cc != "") {
$header .= "Cc: " . $cc . "rn";
}
 
$header .= "From(www.jb51.net): $from<" . $from . ">rn";
 
$header .= "Subject: " . $subject . "rn";
 
$header .= $additional_headers;
 
$header .= "Date: " . date("r") . "rn";
 
$header .= "X-Mailer:By Redhat (PHP/" . phpversion() . ")rn";
 
list ($msec, $sec) = explode(" ", microtime());
 
$header .= "Message-ID: <" . date("YmdHis", $sec) . "." . ($msec * 1000000) . "." . $mail_from . ">rn";
 
$TO = explode(",", $this->strip_comment($to));
 
if ($cc != "") {
$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
}
 
if ($bcc != "") {
$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
}
 
$sent = true;
 
foreach ($TO as $rcpt_to) {
$rcpt_to = $this->get_address($rcpt_to);
 
if (!$this->smtp_sockopen($rcpt_to)) {
$this->log_write("Error: Cannot send email to " . $rcpt_to . "n");
 
$sent = false;
 
continue;
}
 
if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
$this->log_write("E-mail has been sent to <" . $rcpt_to . ">n");
} else {
$this->log_write("Error: Cannot send email to <" . $rcpt_to . ">n");
 
$sent = false;
}
 
fclose($this->sock);
 
$this->log_write("Disconnected from remote hostn");
}
 
return $sent;
}
 
/* Private Functions */
 
function smtp_send($helo, $from, $to, $header, $body = "") {
if (!$this->smtp_putcmd("HELO", $helo)) {
return $this->smtp_error("sending HELO command");
}
// auth
if ($this->auth) {
if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {
return $this->smtp_error("sending HELO command");
}
 
if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
return $this->smtp_error("sending HELO command");
}
}
 
if (!$this->smtp_putcmd("MAIL", "FROM:<" . $from . ">")) {
return $this->smtp_error("sending MAIL FROM command");
}
 
if (!$this->smtp_putcmd("RCPT", "TO:<" . $to . ">")) {
return $this->smtp_error("sending RCPT TO command");
}
 
if (!$this->smtp_putcmd("DATA")) {
return $this->smtp_error("sending DATA command");
}
 
if (!$this->smtp_message($header, $body)) {
return $this->smtp_error("sending message");
}
 
if (!$this->smtp_eom()) {
return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
}
 
if (!$this->smtp_putcmd("QUIT")) {
return $this->smtp_error("sending QUIT command");
}
 
return true;
}
 
function smtp_sockopen($address) {
if ($this->relay_host == "") {
return $this->smtp_sockopen_mx($address);
} else {
return $this->smtp_sockopen_relay();
}
}
 
function smtp_sockopen_relay() {
$this->log_write("Trying to " . $this->relay_host . ":" . $this->smtp_port . "n");
 
$this->sock = @ fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
 
if (!($this->sock && $this->smtp_ok())) {
$this->log_write("Error: Cannot connenct to relay host " . $this->relay_host . "n");
 
$this->log_write("Error: " . $errstr . " (" . $errno . ")n");
 

return false;
}
 
$this->log_write("Connected to relay host " . $this->relay_host . "n");
 
return true;
;
}
 
function smtp_sockopen_mx($address) {
$domain = ereg_replace("^.+@([^@]+)$", "1", $address);
 
if (!@ getmxrr($domain, $MXHOSTS)) {
$this->log_write("Error: Cannot resolve MX ".$domain."n");
 
return false;
}
 
foreach ($MXHOSTS as $host) {
$this->log_write("Trying to " . $host . ":" . $this->smtp_port . "n");
 
$this->sock = @ fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
 
if (!($this->sock && $this->smtp_ok())) {
$this->log_write("Warning: Cannot connect to mx host " . $host . "n");
 
$this->log_write("Error: " . $errstr . " (" . $errno . ")n");
 
continue;
}
 
$this->log_write("Connected to mx host " . $host . "n");
 
return true;
}
 
$this->log_write("Error: Cannot connect to any mx hosts (" . implode(", ", $MXHOSTS) . ")n");
 
return false;
}
 
function smtp_message($header, $body) {
fputs($this->sock, $header . "rn" . $body);
 
$this->smtp_debug("> " . str_replace("rn", "n" . "> ", $header . "n> " . $body . "n> "));
 
return true;
}
 
function smtp_eom() {
fputs($this->sock, "rn.rn");
 
$this->smtp_debug(". [EOM]n");
 
return $this->smtp_ok();
}
 
function smtp_ok() {
$response = str_replace("rn", "", fgets($this->sock, 512));
 
$this->smtp_debug($response . "n");
 
if (!ereg("^[23]", $response)) {
fputs($this->sock, "QUITrn");
 
fgets($this->sock, 512);
 
$this->log_write("Error: Remote host returned ".$response."n");
 
return false;
}
 
return true;
}
 
function smtp_putcmd($cmd, $arg = "") {
if ($arg != "") {
if ($cmd == "")
$cmd = $arg;
 
else
$cmd = $cmd . " " . $arg;
}
 
fputs($this->sock, $cmd . "rn");
 
$this->smtp_debug("> " . $cmd . "n");
 
return $this->smtp_ok();
}
 
function smtp_error($string) {
$this->log_write("Error: Error occurred while " . $string . ".n");
 
return false;
}
 
function log_write($message) {
$this->smtp_debug($message);
 
if ($this->log_file == "") {
return true;
}
 
$message = date("M d H:i:s ") . get_current_user() . "[" . getmypid() . "]: " . $message;
 
if (!@ file_exists($this->log_file) || !($fp = @ fopen($this->log_file, "a"))) {
$this->smtp_debug("Warning: Cannot open log file ".$this->log_file."n");
 
return false;
;
}
 
flock($fp, LOCK_EX);
 
fputs($fp, $message);
 
fclose($fp);
 
return true;
}
 
function strip_comment($address) {
$comment = "([^()]*)";
 
while (ereg($comment, $address)) {
$address = ereg_replace($comment, "", $address);
}
 
return $address;
}
 
function get_address($address) {
$address = ereg_replace("([ trn])+", "", $address);
 
$address = ereg_replace("^.*<(.+)>.*$", "1", $address);
 
return $address;
}
 
function smtp_debug($message) {
if ($this->debug) {
echo $message . "
;";
}
}
}
?>


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